TCO2017 Round 1A PolygonRotation
题目描述We have a convex polygon in the XY plane. The vertices of the polygon are the points (x[0], y[0]), (x[1], y[1]), ... in clockwise order. You are given the vector s x and y.In order to make the ...
题目描述We have a convex polygon in the XY plane. The vertices of the polygon are the points (x[0], y[0]), (x[1], y[1]), ... in clockwise order. You are given the vector s x and y.In order to make the ...
定义对一个简单多边形来说，如果给定其边界上或内部的任意两个点，连接这两个点的线段上的所有点都被包含在该多边形的边界上或内部的话，则该多边形为凸多边形 。 一般有两种方法：Graham 扫描法和 Jarvis 步进法。但是由于作者本人姿势水平有限，这里只介绍 Graham 扫描法。前置芝士为了写成一篇让像我这种的初中生能读懂的文章，我先写一些需要先了解到的东西。计算集合中的相等由于计算机处理...